Method 1

Note After the prerequisites verification and the system verification, the Setup program displays the SQL Server Installation Center page.

In the navigation pane, click Maintenance, and then click Repair.

Method 2

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

Right-click the Performance node, point to New, and then click Multi-String Value.

Type Counter Names, and then press ENTER.

Repeat step 8.

Type Counter Types, and then press ENTER.

More Information

You may receive the following error message if you do not use one of the methods that are provided in the "Resolution" section in this article before you uninstall the 64-bit instance of SQL Server 2008 Reporting Services:

System.NullReferenceException: Object reference not set to an instance of an object

Additionally, you may find the following call stack information in the Detail.txt log file that is generated by the Setup program when you uninstall the 64-bit instance of SQL Server 2008 Reporting Services: